Damper with integral mounting means

Details Damper with integral mounting means Damper with integral mounting means

1983-06-01

1985-05-07

Yeung, James C.

Stoves and furnaces

Stoves

Cooking

1262875, 126318, 285189, F24F 700

Patent

active

045150680

ABSTRACT:
A fire damper with mounting structure which permits the dampers easy installation in a building ventilation duct or passage without the use of conventional, external flanges which must be bolted on at the installation site. The damper includes a peripheral frame having internally threaded, tubular elements secured to the inside of the frame and aligned with apertures extending through the frame. Threaded studs in the elements have self-boring, conical noses so that the studs may be advanced into gripping engagement with the proximal building wall.

REFERENCES:
patent: 569165 (1896-10-01), Bostwick
patent: 789936 (1905-05-01), Reed
patent: 1225795 (1917-05-01), Fraser
patent: 3327764 (1967-06-01), McCabe
patent: 3467163 (1969-09-01), Vassaux
patent: 4411458 (1983-10-01), Strunk et al.

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